soulseek: match share filter word by word

A folder's name is rarely something you can type in full — you remember the band and
one word of the album, not the year, the format tag or where the apostrophe went.
Whole-string matching made those two halves useless together: "pogues hell" matched
nothing, because no path has them adjacent. Each word is now its own substring test,
AND-ed and order-independent, so the two ends you do remember narrow the tree between them.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/databases/officer_db/src/queries/soulseek.ts

@@ -290,9 +290,15 @@ export async function searchSoulseekBrowseTree(params: BrowseTreeSearchParams):
   const term = q.trim();
   if (snapshotId === null || !term) return { nodes: [], matched: [], total: 0, truncated: false };
 
+  // Words are AND-ed, each matched anywhere in the path, so 'pogues hell' finds
+  // '…\The Pogues\… - Hell's Ditch …' — a folder you can name from two ends but never type in full.
   // ILIKE with a leading wildcard can't use the btree index, so this was already a scan of the snapshot's
-  // ~18k rows — which is why folding the column here costs nothing on top.
-  const where = and(eq(soulseekBrowseDirs.snapshotId, snapshotId), sql`${foldedName} ilike ${likePattern(term)}`);
+  // ~18k rows — which is why folding the column, once per word, costs nothing on top.
+  const words = term.split(/\s+/).filter(Boolean);
+  const where = and(
+    eq(soulseekBrowseDirs.snapshotId, snapshotId),
+    ...words.map((word) => sql`${foldedName} ilike ${likePattern(word)}`),
+  );
 
   const [matches, [count]] = await Promise.all([
     db.select(treeCols).from(soulseekBrowseDirs).where(where).orderBy(asc(soulseekBrowseDirs.name)).limit(limit),